Home / 428,907.31-591,963.03-237,982.21

Finding the Fourth Proportional to 428,907.31, 591,963.03 and 237,982.21

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Solution

The fourth proportional to 428,907.31, 591,963.03 and 237,982.21 is: 328,454.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,907.31 : 591,963.03 = 237,982.21 : x
  2. Step 2: Convert to fraction form
    428,907.31/591,963.03 = 237,982.21/x
  3. Step 3: Cross multiply
    428,907.31x = 591,963.03 × 237,982.21
  4. Step 4: Simplify right side
    428,907.31x = 140,876,670,117.70
  5. Step 5: Solve for x
    x = 140,876,670,117.70/428,907.31
  6. Step 6: Final answer
    x = 328,454.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.